Possibly overtightened when installed, the o ring was mushed or the tapping wasn't clean. I've rads installed longer than that, with o-rings on the caps/bleeds and they're still fine, though I do clean the tapping face and add a little silicone grease to aid the o-ring to bed in without damage.
I see thanks. I am going to have to find some replacements.
The tail would be a welded in chromed steel pipe, same material as the rad body.If you can view UK patent number GB2415113.6 it will contain description and drawings of how to achieve a fixed tailed rad.I'm all for new ideas.
Better by design and all that.
But... Unless you can convince a manufacturer (or go into production yourself) it will go the way of most good ideas... Nowhere I'm afraid!
I've spent enough hours winding ptfe - 40 tails on one job last week! So would have loved to have not had to do that!
20 wraps of normal ptfe for me... To guarantee no leak and to still look good!
I've tried gas ptfe and 55 but not honed that skill yet to do it without thinking... See how hard it is for a plumber to learn new habits! Lol.
I'd be interested to see your design drawings and understand if the tail is the same material as the rad so is it in the casting or a different metal?
Good luck
I'm really only concerned with the high volume of rads installed bottom/bottom which is virtually all you see in homes and offices. My hope is that my design becomes the industry standard in that situation
GB2415113.6
It can't leak is the point as it's a chromed steel pipe welded into the rad body to the same standard as the other welds on a rad. There is currently packaging to protect the female threads, can be redesigned to protect a tail protruding no more than 30 mm. This packaging can stay in situ until you have the rad mounted on the wall so ensures it won't be damaged. Do rads really get thrown about on sites, if they're damaged surely a customer won't sign off on a job so care is taken with them.
Not sure if this falls under the BR Document M? Accessibility for all new builds? This building reg dictates that all controls - sockets - switches - heating controls etc should all be installed at an accessible height. In essence all new builds with rads should be installed TBOE with the TRV horizontally installed at the top. I am seeing that more and more.
That's an unpublished application.
Purely flexibility. Pipework runs etc can be dictated by the immediate environment, having 4 ports gives the installer the maximum number of options. That and there would need to be at least 3 ports anyway and using symmetrical jigs makes more sense, I would think.
no they are not what makes you think that ?
other than those stupid telescopic ones i have never had an extension leak
The pit falls is there is various sizes and types of tails also when changing rads you may need various length of extensions as rads have not always been metric and people dont always want floors up or pipework alterations .
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